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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】It is impolite to _____ those persons in trouble. [ ]
A.
1augh to
B.
1augh with
C.
laugh of
D.
laugh at
【单选题】Mr．Green, a famous writer, ____________ our school next week.
A.
visited
B.
visits
C.
was visiting
D.
will visit
【单选题】_________ students will go to the beach for the picnic.
A.
Two hundred of
B.
Two hundred
C.
Two hundreds of
D.
Two hundreds
【单选题】We ______ our breakfast already. We ______ it at school at 6:30. [ ]
A.
have had, had
B.
have had; have had
C.
had, have had
D.
had, had
【单选题】The book _____ well. I'm afraid it _____ out. [ ]
A.
is sold; has sold
B.
sells; is sold
C.
sells; to be sold
D.
is sold; sells
【单选题】The students stay _____ home _____ Sundays.[ ]
A.
at, at
B.
on, at
C.
at, on
D.
on, on
【单选题】The little girl is fortunate to get help from so many strangers.
A.
lucky
B.
excited
C.
happy
D.
grateful